import javax.swing.*;
import java.awt.*;

public class Tools {
    protected static DefaultListCellRenderer listCellRenderer = new DefaultListCellRenderer() {
        @Override
        protected void paintBorder(Graphics g) {
            super.paintBorder(g);
            g.setColor(Color.BLUE);
            g.drawLine(0, getHeight() - 1, getWidth(), getHeight() - 1);
        }
    };
}
